The 1973 Chevrolet Impala has a unique history: Originally a top-seller for GM during the waning years of Nixon's Administration, the full-sized vehicle surged in retro-interest during the 90s when it appeared as Kramer’s car on Seinfeld. This seems less noteworthy, however, than the fact that it was also one of the first cars to include an airbag. This design decision was much debated within GM, however, because airbags emphasized crashes over speed.