A new set of photos and a video posted to Twitter show what appears to be a Toyota MR2 test mule lapping Fuji Speedway in Japan. The mule appears to be based on the GR Yaris hatchback, and we think it's the seventh of at least 20 iterations of MR2 development cars. The MR2 prototype in the social media post wears mismatched bodywork and hides a mid-engine setup.