Bicycle Austin forum

I'm looking to rent 2 or 3 adult size big wheel trikes for a company party. A few years ago someone I know attended a SXSW party that featured a big wheel trike race. As described to me it sounded like so much fun and I'm dying to do something similar for our party but haven't had much luck finding them yet. I'm hoping someone might know where I could find them locally. I have found several sites that sell them and even a few rental places out of state but nothing nearby. Any leads or help with this would be greatly appreciated. Thanks!