Wen Mac Wen-Mac Gas Powered Engine 1957 Chevy Drag Race Tether Car missing front bumper untested. Get Supersized Images & Free Image Hosting. Attention Sellers - Get Templates Image Hosting, Scheduling at Auctiva. The item "Wen Mac Wen-Mac Gas Powered Engine 1957 Chevy Drag Race Tether Car" is in sale since Thursday, October 21, 2021.This item is in the category "Toys & Hobbies\Radio Control & Control Line\Tether Cars". The seller is "allegheny_city_vintage" and is located in Pittsburgh, Pennsylvania. This item can be shipped worldwide.