Ahead of the Spanish GP, Jack Miller hit the Motocross track with Santacrew Sports for some training in the Spanish sun. After a day filming with him, you have to wonder is MILLER the FASTEST MotoGP rider on a motocross bike? Filmed/Directed by Gray Pham graypham.com Want to learn how to Film Motorcycles like I do? Head over to join my Academy NOW! graypham.com/academy Follow my Socials! IG: instagram.com/graypham TikTok: tiktok.com/@graypham.co #motogp #jackmiller #motocross