MSR Opel Challenge

[retr0gamer80]

Hello, i need your help.
I have a dream cast game named Metropolis Street Racer Opel Challenge from a good friend. He worked for Sega Europe some years ago.
It is just a white CD without box. I think it is a kind of promo disc.
Did anybody know somethink about this version?

[tripredacus]

Dreamcast white label are Sample versions, some say promo. Here is one list of releases:
http://dreamcast-talk.com/forum/viewtopic.php?f=2&t=4514#p49695

It is if you disc looks like this:
http://cdn.shopify.com/s/files/1/0999/3734/products/IMG_1722.JPG