Take a look at our SevenStock19 photo album from the event! Thanks to Mazda for bringing out the Racing Beat Bonneville Land Speed Record RX-7s, it was great to see these old friends once again. While many of the land speed records only last for a handful of years, it’s amazing to think that both of these RX-7s have held their respective land speed records for over 20 & 30 years! A big thanks to the SevenStock organizers for making an effort to recognize the contributions of Jim Mederer, Racing Beat’s co-founder and chief engineer for his 40+ year commitment to the development of rotary engine performance.