Tuhia he tomokanga mō tēnei wāhanga - I te tau, ka noho a Speed hei kaihautū Amerika tuatahi ki te whakataetae i te Formula Kotahi mai i a Michael Andretti i te tau, i tana tīmatanga i te 2006 Bahrain Grand Prix
mō te Scuderia Toro Rosso. I whakataetae ia i nga whakataetae 28, i mua i tana whakakapinga i waenganui o te waa e Sebastian Vettel. I muri mai ka huri a Speed i tana umanga ki te whakataetae motuka, ina koa ko NASCAR i eke ai ia mo te Team Red Bull, Whitney Motorsports me Leavine Family Racing i te Sprint Cup Series. I muri mai, ka neke ia ki te Global Rallycross me Andretti Autosport, i toa i te taitara i te 2015, 2016 me te 2017. I wikitoria ia i te 2018 Americas Rallycross Championship me Andretti i mua i te whakataetae i te 2019 me Subaru Rally Team USA.