关于选车，调查，精华区里有好多旧车的建议，但我最近看有个"curbstoners"的问题，
就是unlicensed dealer which is illegal.一定要警惕这种人，其实精华区有些问题可
以帮助区别车的好坏，但还是要知道一下，好保护自己。有关描述可以鉴： http://mva.state.md.us/VehicleServ/REG/curbstoner.htm
What are the Risks?
Buying from a curbstoner increases your risk of being unable to transfer a
title. A curbstoned sale may masquerade as a “steal” but could actually be a
previously wrecked vehicle, one with a “rolled back” odometer, or even a
stolen vehicle. Curbstoners do not comply with state or federal
