We offer our customers two options...
Griff Polychrome. Reasonable chrome appearance with an orange peel texture. This is a polyester chrome film for use on flat surfaces only. Durability is rated at 5 years. Costs less than most cast vinyl, so it's a nice option for economy applications. We always apply this option over a regular cast vinyl for ease of removability.
Convex chrome. This is the closest thing to actual chrome on the market, at least from what I've ever seen. It looks like real chrome with no orange peel and a mirror finish. It's so glassy, they make prison mirrors with it. It can be applied to slight complex curves and is rated 5-7 years outdoors. It has a protective cover sheet that is a royal PITA to separate from the chrome film itself. It tears easily and great care must be taken to weed. It costs literally ten times the cost of cast vinyl. However, the looks match the price. The stuff is absolutely stunning, and if your customer doesn't mind paying the premium, it really is an amazing option.
I'll see if I can dig up a photo to post, but I may have to wait until Monday when I get back to the office.