Autonomous motobikes that would be interesting, I’d like to see how the computer would cope with counter steering. How would it decide at which point it has to turn left to go right or vice versa. 
I enjoyed the programme but it wasn’t one of his best. One of the best bits was the sound man when they put him in the electric car( Tesla?) and it trashed Guy’s Vovlvo Amazon, all he could say was " that was fast".