I Have Been Messing Around With the Wrong Scale
These guys sell a 1/4-scale RC King Tiger tank, perfect for tearing around the neighborhood. Six feet long, nearly 600 pounds. Uses electric motor rather than gasoline, which seems odd to me -- probably takes more juice to recharge it than a Chevy Volt (and that's OK). This would almost be wasted here in Arizona, where people would just think it was cool. I would have to take it back to Cambridge to have any real fun. (Yes, your neighbor can get a T-34/85 if they feel the need to respond).