This isn't really a project, but included because it's awesome. Car broke down? Never fear, bicycle man is here! When the complications of motor vehicle get you halted then you can always turn to a more reliable for of bipedal power. Walmart saves the day? Kent 700 tech bike is $130, Allen cargo trailer, clearance, $17, and AutoZone heavy duty plastic car ramps were $40, I think. A super cheap and reliable on demand car lift system.