The Toyota Sienna may not be one of the first models anybody associates with the SEMA Auto Show, but Toyota’s resident people mover has been a showstopper in Las Vegas over the past few years. Anybody remember the R-Tuned Concept from last year’s show? How about the SpongeBob Edition? While we’re at it, let’s not forget about the Swagger Wagon Supreme from 2010, one of the most outlandish builds we’ve ever seen at SEMA. This year, Toyota’s booth at SEMA brought the Extreme Sienna. While it’s not as mind-blowing as the Swagger Wagon, it still upholds the oftentimes audacious nature of SEMA.