My local indoor track is clay and there's so much traction it's stupid. All you run are slicks. With that said, I've run the Durango and Schumacher in mid-motor form and it's a joke. They can't even come close to times you can pull off with standard rear-motor cars. They turn great but there's not enough rear traction.

I'm not getting how any mid-motor is going to be competitive even with relatively advanced driving skills if you're driving on dirt. I can see it on carpet or euro-style indoor tracks (or if you're one of the top 10 drivers in the world), but not anywhere else.