Today I've tested again. I used the spoiler of an Mazda 6 body, which was cuted down to an height of about 1,8cm. We have to drive it that small. I couldn't believe how the body handled. Tons of Steering especially at high speed turns. I drove a 7T Motor with oneway on this track
www.mac-mettenheim.de (You have to klick on "Strecke" to see pics of the track) We drove counter clockwise. So we had to drive an 180° turn after the longest straight. Everyone should try such an "small" wing. It's worth the test.
MH.