Chrome, flames, and whitewalls. Fins, mag wheels, and hemis. Hot rods, muscle cars, and roadsters. For those who live for classic cars, including mint originals and cherry restorations, Park Street's Classic Car Show is the place to eyeball autos of a caliber never built again. This annual car show has a bumper-to-bumper crop of more than 400 primo vehicles that have been waxed, buffed, and shined so fine that onlookers can see their reflections in the gleaming panels and bumpers of the hardtops and hatchbacks. For this extravaganza, half a dozen or more blocks of Park Street become a day-long parking lot for decades-gone classics, sizzling hot rods, pumped up muscle cars, and nimble roadsters that define vehicle culture. Car nuts can get their fill of these quintessential horseless carriages by cruising Park Street on Oct. 11, from 10 a.m. to 4 p.m.