Bet you can't burn 40 calories a mile on it though!
As a former cafe racer there were times when a lot of calories were expended from the near misses. The best was cruising along at 100+ and having another bike pass while going into a death wobble. He slid under the bike in front of me. I probably expended 1,000 calories jamming on the brakes and trying to find a hole through the carnage. An additional 100 were expended cleaning my under ware.
It wasn't long after when I sold my crotch rocket and got a Hobie 16. I never looked back. I started biking to control weight. I try to do 40 miles a day.