IMSA Prototype Challenge 2017: Lime Rock Park IMSA Prototype Challenge by Mazda - July 22, 2017July 22, 2017 Race coverage from the IMSA Prototype Challenge by Mazda at Lime Rock Park. Commentary from Shea Adam and Jeremy Shaw. http://audio.rpix.org.uk/2017/races/2017_ipcm_lrp_r.mp3
