Vehicles covered with stickers of anime or game characters are called Itasha but its not all about the stickers and the way they are stuck on - its about the accessories that are display in and around the vehicles too and about the features in the interior too.
This article features photos of Itasha accessories, merchandise and wot not - all taken at the Ita G Festa which took place last October. Will post more photos from the event in a mo.
Itasha Accessories
The Mirai Itasha should be filled with a couple more merchandise items by this October including an army of figma Mirai ^^;