When has repping any auto manufacturer's shirt been cool? Never. Every time I see someone with one on, they're in their 50s, fat, and balding. They have it tucked into their faded blue jean shorts, and are the type to wear socks with sandals. Not to mention, shirts like that seriously just make you look like a tool.
Save yourself the embarrassment and cancel the order.
And by the way, YOU'RE the one that said you were leaving and now you're saying you're staying? Make up your mind dude. Do you need us to walk you to the bathroom to make a poopie? Do you want us to clap for you for getting that shirt? There are like 5 metric tons of fail in this thread right now, it's crazy.
What you should have done is saved the cash, put it away, or put it towards some decent mods for your car. That would gain you more respect on a website like this than buying a Type R Accord t-shirt off of eBay.