What kind of gas mileage does a riding lawnmower get?

I'm not talking about while it's actually cutting grass. I mean if you seriously drive a riding lawnmower on a paved driveway, what kind of gas mileage does it get?|||37 city, 45 highway.|||I'll ask Waterboy when I sees him tonite.|||I agree with Beldin, unless the air conditioning is running. Then it might be a little lower.