Hot Wheels is a popular brand of toy cars produced by Mattel. The brand was first introduced in 1968 and has since become one of the most successful and iconic toy car lines in the world. 

Hot Wheels cars are known for their sleek designs, vibrant colors, and high level of detail. They are typically made of die-cast metal and feature various styles of cars, including sports cars, muscle cars, classic cars, and custom designs.

In addition to their aesthetic appeal, Hot Wheels cars are also popular among collectors and car enthusiasts. Some models are highly sought after and can become valuable collectibles over time.

Hot Wheels cars are often designed to be used with Hot Wheels tracks and playsets, which allow for exciting races and stunts. The tracks can be connected and combined in various ways to create unique layouts, making for endless hours of fun and creativity.

Over the years, Hot Wheels has collaborated with various car manufacturers and pop culture franchises to create special edition cars. 

Overall, Hot Wheels cars are beloved by children and adults alike for their quality, design, and playability, making them a staple in many toy car collections around the world.