Completed in April of 1990, the Dodge Viper RT/10 Concept was the second Viper concept produced. It was the first Viper to have a V10, although VM02 had a cast-iron block. The Dodge Viper RT/10 concept car was a huge hit at both the 1989 and 1990 Chicago Auto Show, so much so that it went into production for the model year 1992. Spokespeople at the show explained the spiritual ties to the ''60s AC Cobra 427. This brute-force sports car boasted a big-block 8.0-liter V-10 engine and a strictly functional open cockpit.