Having had some experience with the Vega (in motor pools and family), the failure was not the Vert-a-Pac. It was the car. The Vega, frankly, made the xplody-gas-tank Pinto feel like a real, reliable alternative. GM did too many strange things with that car. And they would rust out in SF - literally, rust through at the base of the windshield and let the glass fall out - in 1 year (no rust-through warranties back then).