Speedeez are micro scale cars similar to Micro Machines. They were first produced by Playmates Toys in 2003. Despite their popularity, they only sold for a few years before being discontinued.
Like Micro Machines, these micros were almost all about an inch and a half in length. The big selling point for this brand of micros was the ball bearing in the base for added speed, hence the brand name Speedeez. All cars included the ball bearing, but some of the aircraft did not.
What's it worth? Take a look at this Speedeez price guide: sold listings for a value indication.