Infernus in Grand Theft Auto IV?

Complete stevies car missions, the infernus you collect for him, will respwan in the same place forever!!! its a gold one, parked outside a Pizza/salad diner on Montauk Ave in Downtown Broker here is a map with the location http://snapmap.wikigta.org/index.php?map=IV_SE&title=INFURNUS+SPAWN+PLACE&set=277,156 if its not there when you get to the location drive round the block then it will be appear, ive tried this about 4 times on different days to make sure, and it definitely works!!!!