Unger's van is a silver Nissan Quest, owned by Earl Unger, which appears in Home Alone 3. It is not as frequently used as Jernigan's Van, and is only seen on minor occasions in the movie.
First of all, Petr Beaupre uses it to take the thieves to the taxi depot. Next, Unger and Alice use it when they steal a dog, and finally, Jernigan uses it to evacuate the area when Alex Pruitt calls the police.
The van during evacuation