Medary.com

Car makers look at seat vibrators to warn drivers that they're tailgating.

So, there is some method to all this buttock-shaking madness. For his part, Dr Spence is examining the possibility of vibrating other bits of the vehicle, including the seat belt, pedals and steering wheel. Spence says that one Japanese manufacturers claims all cars will be fitted with tactile warning systems by 2010, so don't say we didn't warn you.

Fark's headline: "Future cars will have seats that vibrate when the driver is following too closely. So get used to women drivers tailgating you." Okay, then . . .