Almost all the images shown on that website are done with Digital SLR camera's with far superior lenses. Like the (no longer produced) Nikkor 6mm and 8mm SLR Fisheye. Some are done with "Film" camera's and scanned digital by professional photographers with decades of experience.
These older SLR fisheyes lenses start at around $3000.00 USD secondhand. Coastal Optics will custom grind lenses brand new but you will be looking at around $40,000 to get you started.
Don't expect results this clear from a Nikon Coolpix of any modal (it won't happen!)
I have a mate who made some of the Porsche images... there method is based on very good cam equipment, Everything is calibrated down to a T. They have all the lighting they need. They have a team of staff with them on shhots and a team of Post work people as well. Most of the shots are made up of 36 images... well more like a few 100 actually, layed, and blended. RAW image shooting and processing.... A good image will take at least a day to shoot and around 10 days of post work. All images will be done in Studio environment with additional imagery done of a location which will be blended into the car pano later. Thats why they get great images... so don't feel all to bad.
------------- If I only had an hour to chop down a tree... I'd spend 45 mins sharpening the axe.
Here's a 2001 Mercedes C320 I recently did.
I used the Nikon Coolpix 8800 with FC-E9 Fisheye.
It's not the best but the client is happy.
I hand held the camera and guessed the nodal point as there was no room for a tripod.
http://www.circularworlds.com/2001MercedesC320.mov
the file is 1.1MEG in size.
I'm going to try it again using higher resolution as Panoweaver seems to degrade the quailty when saving the pano.
------------- CircularWorlds.com "turning your head with panoramic photography"