Any Corvair Fans Here?

My much older cousin had one in the early 60's, not sure of the car's year. He wanted to show me how quick it was. We were stopped at an intersection, the light turned green and he basically side stepped the clutch. The car jumped into the intersection and about halfway across it felt like we got hit in the rear, the car shot forward. My cousin said "oh ****". I asked what happened. He just pulled over up the road and said the fan belt broke!

Damn, that cooling fan must have taken a serious amount of HP, when it broke the car felt like a booster rocket kicked in.......