Speaking of Maisto, I saw a small version of their "Hot Haulers and Cool Cars" in C V Pharmacy the other day.  They don't have any Buses pulling Bugs in this series, but they are the same cars that sell for $1.96 at Wal-Mart - the "Power Racers" with the pull back motors.  Since I've got 50 or so of the New Beetles and Buses Power Racers from Wal-Mart, I think I'm going to buy a couple of these other sets, swap the trailer hitches over to some of my Buses and put a New Beetle on the trailer.