One of the most popular pastime hobbies involving model cars is that of slot car racing.  Electric toy cars such as slot cars run along slotted tracks where cars are powered by electric current.  These slots are also where the metallic blade from the slot cars fit all the way to the slot bottom.  The majority of slot car hobbyists carry out races with other enthusiasts on more than one occasion but there are a few individuals who focus their attention to create sceneries, modeling roads and highways, and simulating urban and rural traffic.

Enthusiasts of slot cars that are new to the idea begin with commercially-available cars that are made with standard specifications.  These standardized slot cars are made for improved performance on standard tracks.  Long-time enthusiasts habitually do some modifications or assemble them from individual pieces and customize them to make sleek frameworks and be balanced on the racetrack.

Plenty of slot car hobbyists also get pleasure from modeling each of their cars after popular real car models such as those from Ford, Ferrari, and BMW.  Just like real cars, slot cars also have replaceable rubber tires and electric motors and chassis can also be modified to make them more faster and make them more stylish.  The highest speed of which slot cars can reach can be from 1000 to 1800 revolutions per minute (rpm). 

The system to operate these little cars is by a single-handed controller that’s only purpose is to regulate the voltage of the electric motor inside the car.  The evolution of slot car racing has for the most part been with the handheld controller and the cars themselves but the track practically remained the same since the 1950s.  New technology have allowed the creation of tracks which let slot cars change lanes or even share a single slot.  Slot car racers get their challenge on the curved sections where the voltage being fed to the car should be correctly adjusted with the right squeeze on the controller to prevent de-slotting or lose momentum that will be the losing factor for racers.

Much like model trains, slot cars have the same idea in terms of arrangement.  Hobbyists of slot cars and model trains both build the track range, make sceneries which consist of trees and miniature structures.  The only variance is the variation of speed between model trains and slot cars and more people can participate in slot cars compared to the essentially solo operation of model trains.

In some occasions, slot cars can also use other vehicle models such as motorcycles, trucks and other types of vehicles.  Also, like other model vehicles, slot cars sizes come in several forms but the most common are 1:24, 1:32 and H0, which is the most popular scale size in the US and other parts of the world. 

The introduction of traction magnets have also made it easier for slot cars to turn corners without reducing that much speed without getting thrown out the track.  Some aficionados, however, choose to do things the old way and without traction magnets.  Traction magnet-less slot cars have a propensity to drift and are more prone to de-slotting which makes it more fun and exciting.