Bicycles are a great efficient mode of transportation.
Built in Bike LockEdit
A Simple built in combo lock can be built into bike tubes to lock the tires, and is only able to be unlocked through a 5 digit combo on the handle bars. This would be great for commuter bikes that are mostl likely going to need to be locked up anyways. Also a optional cable can be brought to lock up the bike to a tree or bike rack.