What is the rarest / most exclusive production car you have ever driven / ridden in?

[madoka]

Sat in a Bugatti Veyron when it was first introduced at the LA Auto Show. I knew one of the show girls working the booth and she invited me in. Took a bunch of pics.

 

[Jason15]

The rarest i've ever been in, a 1979 Clenet Series 1, only 248 made it is owned by my uncle and he let me drive it.

 

[GTaudiophile]

Holy thread ressurection Batman!