I can only imagine that a motor traveling at 103 MPH may need time to rest or you risk burning it out
You will probably find in the manual somewhere that you are advise not to use the motor at full power for too long and after 15-25mins of use you must let the motor cool down for atleast 10mins
when I used to race RC cars with motors I used to use a big heatsink on the motor to help cool it down.
A RC car that can go 100mph is just crazy!!, one or two of mine can go 60mph and just controlling it in a striaght line can be tricky.. Ive only got gas powered RC cars/trucks now and I find you need a big open space!
I have had a few crashes
but you can buy alot of spares and usually just replace that part that is damaged.
I suppose the controls have to be redesigned so that there are levels between 10 and 90 miles an hour so that you don't just fly into full power by moving the controls an inch.
I think your find that there wont be any difference between 10 - 100mph with the controls, it'll just need a steady hand.
your see at the end of the video it says "Experts Only" thats one thing I like about Traxxas, they put all there RC stuff in categories on how difficult there RC's would be to handle/control.