Pontiac Trans Sport
Few cars in history have gotten such a bad crash test rating that they ended up in a museum, but the Trans Sport holds that distinction. The Trans Sport was the second-generation minivan offered by GM in the 1990s. The IIHS crash test was so bad that the van famously overlapped on itself (via Cars.com).

The Trans Sport had a lot of potential to compete with the popular Chrysler minivans, but the poor crash test rating resonated throughout the automotive industry. Consumers were not too pleased with a van that scored this low. The Trans Sport was one of the most unsafe vehicles on the road in the 1990s.