Arnold Schwarzenegger is one happy used car salesman after someone took his Bugatti Veyron off his hands ... for about $2.5 million.
We're told Arnold's 2015 Veyron -- which goes 0-60 mph in 2.5 secs -- only had about 1,000 miles on it ... so it's a sweet ride.
The buyer is Obi Okeke, aka Doctor Bugatti ... the same guy who sold Floyd Mayweather a similar whip. Okeke plans to resell it, if you're in the market for something that tops out at 267 mph.
And you can afford the inevitable tickets.