Designed for busy urban environments, the Modular Robotic Vehicle (MRV) is an electric vehicle driven by four independent wheel modules which can be controlled independently.
More:
https://ntrs.nasa.gov/archive/nasa/c...0150019646.pdf
Previously:
NASA crawler-transporter time-lapse - video
NASA Tire Assault Vehicle (TAV), made from a German World War II tank model
Lunar Landing Research Vehicle (LLRV) test flight - video
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