Since I asked for this topic, I think I should make the first post. And to be clear, as mentioned, the item or place or whatever can't be named directly after a Twilight character, but the name can be a coincidence, and it would be easier and safer if the object or place or other item was made or named before October 2005 when Twilight was released to the public.
So now that's clearer, I'll start off.
For Bella, there's the Borgward Isabella, a German car made in the 1950s: http://en.wikipedia.org/wiki/Borgward_Isabella
For Rosalie, there's the Citroen Rosalie, a racing car and a range of sedans made by Citroen in the 1930s: http://en.wikipedia.org/wiki/Citro%C3%ABn_Rosalie
And for Renesmee(as mentioned before), the Mitusbishi Nessie concept car, witch shares the name Nessie with Renesmee and the Loch Ness Monster(for which it was named): http://en.wikipedia.org/wiki/Mitsubishi_Nessie
As for Alice, no cars, but car maker and aerospace engineering frim Matra released a home PC computer in the 1980's called the Alice: http://en.wikipedia.org/wiki/Matra_Alice
Also, Telecome Italia markets phone and internet service in Italy, Germany, France, and Holland under the Alice name: http://en.wikipedia.org/wiki/Telecom_Italia
Anyone know of anything else like this?
Audi, Twilight, Cher, Pink Floyd, symphonic/progressive rock, KStew, RP, Bio-Booster Armor Guyver-what's not to like
Team Renesmee, Team Bella, Team Edward.
Fan fic stories: http://www.fanfiction.net/u/2192109/