Geek, rebooted

Why? Because TopGear is conducting an experiment. Back on that computer in Finland, Greger dominates the world of online racing. He is the undisputed grandmaster of iRacing, a fiendishly difficult driving simulator that recreates the exact physics of scores of race cars and circuits from around the world.

It's not some gimmicky graphics-fest, but a serious way to hone racecraft and learn about car control. And in the last six years, in iRacing and earlier online sims, Greger has conquered all - leading 2,339 of his 2,581 laps and winning every race from pole. Just a week ago, he clinched the iRacing World Championship, earning himself $10,000 as he crossed the line. No wonder fellow iRacer and NASCAR king Dale Earnhardt Jr is Greger's biggest fan. He is untouchable. Today's test is to see how such digital dominance translates into real life.