xpress-k1-15 Here is a comparison between the wheelbase of the Xpress Xpresso K1 (Closest), Xpress Mini Road Runner 2 (MRR2) AWD M-Chassis (In the middle) and the Legendary Road Runner Touring Car (Furthest Away). Never miss an issue of RC Car Action! Subscribe today with a Digital Edition subscription or Print + Digital combo! ← Previous Image Next Image →