The 8229 Tread Trekker is a very unusual convertible vehicle, not necessarily based on anything real. The tracked vehicle uses the new rubber tracks and sprockets and includes a Technic figure. They offer good traction but are not connected to any other feature. The upper part of the vehicle detaches from the base and becomes what appears to be a boat. Though the set is unique, this Lego technic set is pretty simple and offers limited functionality but a good selection of the new parts. Plus another Technic minifig!!
This set uses the new fixed length rubber tracks and sprockets. .
By Technicopedia