This also falls into the bucket of exciting enough to be competitive, low enough pressure to be fun. Don't overthink this one: just wear some cute athleisure and show up to suit up. Go-kart racing can be as flirty as you make it, and with a helmet on your head and the gas pedal under your foot, you might be invigorated with enough adrenaline to really show your date what you've got. Just make sure to keep it light, and if you have competitive tendencies, curb them with a bet like "winner buys snacks" or something. If it's a first date, leave it at the racetrack. If it's second or beyond, grab a bite or a beer after, and see if you can lock in that next date for a rematch.