I found using black under coat very effective on this. The sidecar, being metal, kinda give you hell when u superglue them on the plastic bike body ( i was holding it like 3 mins and hoping it doesn't glue my fingers togther on them as well...)
Zip Kicker good, two-part epoxy better! If you glue your bikes to bases just glue the back wheel down, but make sure it still spins. Then in the heat of battle you could make your bikes wheelie into an assault!