Timothy Geigner at Techdirt says: "Are those two vans similar? Of course they are! So is Disney/Pixar guilty of copyright infringement? Well...no, probably not. This again is a matter of the idea and expression dichotomy in copyright law. The purpose of that part of the law is to limit copyright protection to specific expression and not mere ideas and themes. For instance, a 1 to 1 copy of Daniher's design on Pixar's cartoon van would likely be infringing. The concept of a purple van with a unicorn on the side of it is, however, not protectable. In fact, it's nearly in trope territory."