In this particular instance, he wanted to badger me about practising driving, and I wanted to explain why I don't like driving his car much.
We ran into an immediate problem - neither of us knows any of the words we need for this discussion, including but not necessarily limited to:
clutch (and clutch control)
steering (and steering wheel)
If anyone could supply us with some driving-related French vocabulary, that would be very useful, thanks :)