As if the shifting on the fly isn't enough, having a 4 motor drive train will only make it worst. If you look closely at the gear shifter, you can tell how much different the ratio will be. I suspect with 4 motors, it can achieve a top speed of more than 13~14 ft/s... Mean while, an extremely slow speed of 1~2 ft/s to push forward in low gear...
I expect the rotating arms aren't finished... There will be something extra powered by the seat motor at the end of the arm. With a drill motor controlling the arm, it can easily get goals and spin them around with about 20 robots attached to it.
Well, actually, it will be strong enough to rotate 2 goals, and probably a robot attached to one of the goal.
I suspect the two yellow pole at the and of the arm are pivots for some really really strong claws. Because it doesn't make sense for the seat motor's flexible shaft to be exposed like that. However, it could be really likely that the seat motor will be used to raise up the goal. Ah, that make sense... a hook like device, or some latches that will attach to the goal pole that will slide up and down on the yellow pole, and the seat motor attachment under it will be pushing the latch/hook up and down on the pole.
Hmm... the hooks/latches should be pointing forward or some how rotating, so they can grab both goal by running straight into them... Or else they will have to grab one goal at a time and rotate the arm to grab the other one...
Be afraid... Be very afraid...