2.1 Drags are meant for Community Patch Beta 0.43 and newer. They do not work with the original game version.
Please check out the forum for more info.
City tracks
I have always been a city track fan. Enocell's Perkane City was my inspiration for getting into the track making business. Here's a list with some city tracks made for Monster Truck Madness.
-Kmaster
NOTE: The ini file for this list contains the Fixmore4.pod. Download it and extract it to your MTM folder.