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Caroline is a 2006 Volkswagen Passat, converted by a team from the Braunschweig University of Technology to be an autonomous vehicle.
The car was a finalist in the legendary Darpa Grand Challenge, a US Defence Department-sponsored competition held every year or two in which driverless vehicles battle it out to see which can complete a set course in the fastest time. The cars must drive themselves — they cannot be steered by remote control.
Although Caroline came seventh out of the 11 finalists, it must be said that it did not successfully complete the course.