I Also saw this site, as you know the company mentioned sells cars at very appealing prices.

And as of writing this are still up and running:
http://veho-alliance-lp.com

There are even a couple of good reviews on Google (information requested about and positive reply received same day?) As a Yorkshire man I love a bargain, but... I don't part with my money easily.

So I did more research and found that the testimonials on this car sales site are actually verbatim from other companies’ sites e.g.: Trevor & Janet Fenn 'I purchased my Vectra from GTB Cars and was treated great by a husband and wife team. Never experienced such a pleasant experience...'

This is from:
http://www.autocardealers.co.uk/reviews/

And refers to
http://www.gtbcarsales.co.uk/

‘I purchased my Vectra from GTB Cars and was treated great by a husband and wife team. Never experienced such a pleasant experience in’

Ditto the testimonial from B Osborne on both sites but on www.autocardealers refers to Redbrook Motor Company

noticed also that while I have being doing my research two cars have become listed as sold, this I feel is Veho-Alliance's way of stringing out two unfortunate people until there bank transfers clear.

If they can give me an address for a showroom I can visit i would definitely stand corrected. But I don't think that will happen, so in my opinion a scam.