I found a very quick way to level up to 35,but you need 8 players, all you do is start up 2 teams of 4 in gymkana pro tour and search at same time.( it works best if the host of the teams live close together) when you get in a game together with everyone,have everyone hit the gas(go fowards a bit), then go in reverse(go backwards abit), hit gas(go forwards), than go in reverse.Do this ontell game is done, BUT NO ONE CAN GET A POINT"
after the time is up ever body will get 1000 point for 1st place,200 extra point if there driver rating is cautious,and 500 team bonus which add up to a total of 1700 point in 1.5 mins this is the fastest way to level up online I and 7 other player can confirm this works.Also you can get your 10 games won and play 25 games achievement this way.