World's oldest running car up for auction

With a top speed of 61 km/h and a range of 32 km on a single tank of water, the steam-powered tricycle has made the trek from London to Brighton four times and participated in the world's very first auto race. To be fair, it was was the only vehicle to show up, but that didn't stop it from averaging 26 km/h and clipping off a top speed of 60 km/h over the 32 km course.

If the Runabout's motorsports credentials aren't enough for you, the vehicle brought home double awards at the 1997 Pebble Beach Concours.

A total of 20 De Dion tricycles were manufactured, and of those, only six remain. This is the only operable example in existence, and if you want to make it yours, you'll need to give your checkbook a workout. RM Auctions expects the De Dion to command bids between $2 million and $2.5 million.