I have to partially disagree, a simple search on Google itself reveals that a lot of established websites containing Google in their name are flourishing well and even earning money, Google Adsense too as far as my eyes see. I think as long as you make it clear that it unofficial, Google will not bite. However Google won't have anyone bearing a domain with just Google in it, it looks like they took google.vc because I remember that being an undeveloped unofficial site containing links to the official Google. Either they purchased it or redeemed it by trademark. I actually think your domain is worth something because of the SEO value which is Google. It is quite worthless now, but it may be worth trying to run a blog or forum.