Reupload without background music or old film look since many of you didn't like those. Better now? I also edited it a bit longer. The build is a radiocontrolled Lego tank (or a self propelled gun?, idk) that launches Lego soccer balls (= Lego GBC balls) using a rubber band powered gun.

Tank specs:
Wheels: 12
Motors: 5x Lego XL motor, 2x Lego M motor
Batteries: 2x Lego Power Functions Battery box
Weight: 1850 grams
Ammo magazine capacity: 6
Ammo: Sports Soccer Ball Plain x45 https://www.bricklink.com/v2/catalog/...
Rubber band: Theraband Gold https://www.amazon.co.uk/dp/B00GUIU6BY
Remote control:
2x SBrick https://www.sbrick.com/store
BrickController 2 app (Android) https://play.google.com/store/apps/de...
PlayStation 4 wireless controller
Controls:
Left Stick: Left wheels forward/backward
Right Stick: Right wheels forward/backward
DPad: Gun up/down
Action buttons: Gun draw/unwind, Gun ammo insert and lock/release

Part list:
2x SBrick
1x PlayStation 4 wireless controller
1x Android device (e.g. phone or tablet) for running BrickController 2 app
1x Theraband Gold sheet (cut into two 190x7 mm stripes)
1x office rubber band (size 60 mm)
2x furniture pad
1x thin and strong string (length 30 cm), e.g. Westline Dyneema 50
6x Sports Soccer Ball Plain [x45]
2x Power Functions Battery Box [88811]
5x Power Functions XLMotor [88821]
1x Power Functions MMotor [88831]
2x Power Functions Extension Wire (20cm) [88861]
2x Technic, Linear Actuator [61927c01]
1x Technic, Linear Actuator Mini [92693c01]
130x Technic, Link Tread Wide with Two Pin Holes [57518]
4x Technic Tread Sprocket Wheel Extra Large [42529]
8x Technic Tread Sprocket Wheel Large [57519]
10x Technic, Shock Absorber 6.5L Hard Spring [731c04]
20x Technic, Brick 1 x 16 with Holes [3703]
2x Technic, Brick 1 x 8 with Holes [3702]
2x Technic, Brick 1 x 6 with Holes [3894]
2x Technic, Brick 1 x 2 with Hole [3700]
6x Technic, Panel Plate 5 x 11 x 1 [64782]
14x Plate 1 x 12 [60479]
18x Plate 1 x 10 [4477]
10x Plate 1 x 8 [3460]
4x Plate 1 x 6 [3666]
12x Tile 1 x 8 [4162]
4x Tile 1 x 6 [6636]
4x Tile 1 x 4 [2431
18x Technic, Liftarm 1 x 15 Thick [32278]
11x Technic, Liftarm 1 x 11.5 Double Bent Thick [32009]
4x Technic, Liftarm 1 x 11 Thick [32525]
4x Technic, Liftarm 1 x 9 Bent (6 4) Thick [6629]
5x Technic, Liftarm 1 x 9 Thick [40490]
6x Technic, Liftarm 5 x 7 Open Center Frame Thick [64179]
8x Technic, Liftarm 1 x 7 Thick [32524]
2x Technic, Liftarm 1 x 5 Thick [32316]
3x Technic, Liftarm 3 x 5 LShape with Quarter Ellipse Thin [32250]
30x Technic, Liftarm 3 x 5 LShape Thick [32526]
10x Technic, Liftarm 2 x 4 LShape Thick [32140]
10x Technic, Liftarm 3 x 3 LShape Thin [32056]
1x Technic, Liftarm 1 x 3 with 2 Axle Holes and Pin / Crank [33299]
9x Technic, Liftarm 1 x 3 Thick [32523]
7x Technic, Liftarm 1 x 2 Thick with Pin Hole and Axle Hole [60483]
6x Technic, Liftarm 1 x 2 Thin [41677]
6x Technic, Pin Connector Perpendicular 3 x 3 Bent with 4 Pins [55615]
2x Technic, Pin Connector Perpendicular 3L with 4 Pins [48989]
2x Technic, Pin Connector Perpendicular Double 3L [32557]
4x Technic, Pin Connector Round 2L with Slot (Pin Joiner Round) [62462]
1x Technic, Pin Connector Round 2/3 L [18654]
2x Technic, Axle and Pin Connector Perpendicular Triple [63869]
1x Technic, Axle and Pin Connector Perpendicular Split [92907]
1x Technic, Axle and Pin Connector Perpendicular Double Split [41678]
4x Technic, Axle and Pin Connector Perpendicular 3L with Center Pin Hole [32184]
4x Technic, Axle and Pin Connector Perpendicular 3L with 2 Pin Holes [42003]
2x Technic, Axle and Pin Connector Perpendicular [6536]
1x Technic, Axle 16 [50451]
2x Technic, Axle 12 [3708]
1x Technic, Axle 10 [3737]
5x Technic, Axle 8 [3707]
1x Technic, Axle 7 [44294]
12x Technic, Axle 6 [3706]
3x Technic, Axle 5 [32073]
12x Technic, Axle 4 with Stop [87083]
2x Technic, Axle 4 [3705]
4x Technic, Axle 3 [4519]
3x Technic, Axle 2 [3704]
1x Technic, Universal Joint 3L [62520c01]
1x Technic, Reel 3 x 2 [32012]
2x Technic, Gear 24 Tooth (2nd Version 1 Axle Hole) [3648]
1x Technic, Gear 20 Tooth Bevel [32198]
2x Technic, Gear 16 Tooth (Second Version Reinforced) [94925]
1x Technic, Gear 12 Tooth Bevel [6589]
3x Technic, Gear 8 Tooth [3647]
18x Technic, Bush [3713]
24x Technic, Bush 1/2 Smooth [4265c]
27x Technic, Bush 1/2 Toothed Type I [4265a]
2x Technic, Pole Reverser Handle / Axle Connector [6553]
22x Technic, Pin with Friction Ridges Lengthwise and Pin Hole [15100]
2x Technic, Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle [18651]
2x Technic, Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle [11214]
60x Technic, Pin 3L with Friction Ridges Lengthwise [6558]
150x Technic, Pin with Friction Ridges Lengthwise [2780]
24x Technic, Axle Pin with Friction Ridges Lengthwise [43093]
1x Technic, Axle Pin without Friction Ridges Lengthwise [3749]
3x Technic, Pin 3/4 [32002]