The pink Vespa in this episode is an ET2. This specific model was discontinued in 2005.
The helmet worn by Steven is a Z1R "Metro" helmet.
The marquee used to announce The Dandy Warhols concert is The Big "A" marquee at Anaheim (now Angel) Stadium in Anaheim, Ca.
The venue used for The Dandy Warhols concert is the (former) Los Angels Sports Arena.