I won't get one but the stickers do look cool.
With my work I prefer not to have anything to distinguish my car so to speak, from my hater clients
If the stickers were about 1 metre long by 100mm high they would only cost about $1 in materials to make. So the size that you guys are doing, you could do heaps inside a square meter.
If you were thinking of doing more stuff in the future like banners, stickers anything vinyl, you should look into buying a vinyl cutter such as http://cgi.ebay.com.au/HX-720-VINYL-CUT ... dZViewItem
Save you a fortune and anyone who knows how to use a computer would be able to make stickers. Spend $400 and make it back easy with the first order of stickers.
You can charge a fortune too