Kevin
There are many players who have more than one account. However a few pointers so that you don't incur the wrath of your fellow gamers or the iGP staff.
1. Don't play with multiple teams in the same league and tier. Most leagues frown on this because it is possible to use one of your teams to assist another. If you do this you will be kicked from the league.
2. Don't set up a league and race there with your multi-accounts to gain XP, game money or tokens. This is farming and likely to result in sanctions such as removal of tokens and money. It may also result in an account ban.
Thanks for the response. I'll post this in our league wall since there was a case of account sharing back then that resulted in a ban from the devs and most managers in our league are confused about the rule.