There was a definite "s"sound before chiavi, (schiavi = slaves) and 'un'' between sulla and ruota. Slaves and wheels are not a good combination!
it makes perfect sense...when you go for a run in a park or go surfing but you bring your car, you might need to leave your keys on the wheel
Is that something regular people do? Makes sense I guess but it wouldn't be that hard to spot on most cars