Very impressed with gas mileage

I have a feeling the gas pump just shut off before the tank was full. Either that or the car has a serious OD gear in it.

I daily drove a slant for over 100k miles and did every gas mileage mod under the sun and averaged 20-21mpg if I didn't get on the gas hard. That was with a 904 trans. Best I ever got was 23mpg a few times but I chalked that up to the tank most likely not getting full enough.