I notice that some drive-through car washes have a track that pulls a vehicle along. I also see fast food drive-thrus and vehicles on idle for up to 30 mins at a time. I wonder why drive-thrus don't have a track? Then a car could be turned off if it's a long line and be pulled through. Less exhaust, more relaxing, cleaner air. Or maybe we decide to not use drive-thrus at all and just prepare food at home... Would I?