They're Hot Wheels type cars of the movie characters with a bas-relief of their robot mode underneath. Hasbro is taking on Mattel while they're weakened by tackling the Hot Wheels type market.
GET IN IN THE JUGULAR WHILE THEY'RE WEAK, HASBRO! Do it so we no longer have to see toys with names such as "Bruce Wayne Driving Coupe into Bruce Wayne Driving Attack Coupe".
YAY FOR RANDOM ENGLISH WORDS-STYLE MARKETING.