21.   An electronic control senses when the front wheels are starting to slip and forces oil into the clutch that connects the rear wheels.

22.   And there is ASR traction control that detects when one rear wheel is spinning faster than the other and selectively applies the brake to that wheel to restore traction.

23.   As soon as the doors open, the rear wheels of the bus automatically lock and the bus will stop.

24.   At some point, however, a metal retaining clip, which held the bolts fastening the rear wheels, snapped, Miele said.

25.   Automatic slip control helps get all of that power to the rear wheels during start-up without breaking traction.

26.   Back up in a Continental, and the mirrors tilt down to give you a view of what the rear wheels are about to roll over.

27.   Barry emerged from the meeting and found that his car had been ticketed and its rear wheel locked in a parking boot for past unpaid fines.

28.   Both Boxsters come with an optional traction control system that uses both the brakes and the engine to prevent the rear wheels from sliding on slippery surfaces.

29.   A favorite, David Millar, a Briton with Cofidis, crashed heavily on a corner when his rear wheel blew out.

30.   A very heavy rear-drive axle keeps the rear wheels from bouncing much, and a finely tuned suspension seems to skateup the road.