Mercedes-Benz F100

1991 Mercedes-Benz F 100 Shown at the Detroit auto show in 1991, this minivan-shaped research car reads like the options list of a modern luxury sedan. It replaced the key with a chip card, and Mercedes' Keyless Go followed on the S-Class at the end of the decade. Its radar distance control ran ahead of the Distronic cruise control that the same S-Class later offered. Xenon headlamps, a rain sensor, tire-pressure monitoring and voice control of the phone all appeared on it too, and all reached production Mercedes models within the decade. If you want one concept that shows how much of today's driver assistance was imagined before the web went mainstream, this is it.