Fantastic living room racers.
These inexpensive little cars are great value for money.
Fast, lightweight, robust (yeah anything can be broken if mistreated) and ready to run out of the box. Just pop in two AA batteries into the controller.

In the box there is the car with battery, a remote controller, a change of tires to drift, a charger, a manual, some spare body-pins, and a couple of wing mirrors.
Steering and throttle are fully proportional with a clever addition of a throttle trim knob to smoothly adjust the amount of power output to the wheels. Meaning that the car/controller be easily adapted, easing new or inexperienced drivers into the seat. So everything fine there.
One thing I did notice is, that after a time, the cars no longer rolled freely after releasing the throttle and also struggled with reversing. After closer examination I found that the cars had managed to collect every hair and bit of dust from the floor (and I thought I'd cleaned it) and wrapped it around the rear axle creating friction. So I recommend occasional maintenance. To do this just take off the bodyshell and very carefully the rear wheels. The hair can then easily removed (see photos).
MoGGsiE's secret weapon.
To reduce the hair collecting problem, what I do now before each race is to send a minesweeper out a few times around the track.
For the minesweeper, I use one of the cars and put some decorators tape under the chassis (sticky side out). As you can see from the photos it's an effective method for finding the stuff my vacuum didn't. The method is easy, just stick it to the inside of the body shell from left to right, leaving a little slack but not to much. It's best to use the 3cm wide, easy removable, crepe tape. The photos also show a second run with some fresh tape and as you can see it's way better. I hope you find this helpful. The front wheels seem less effected by this issue but it's good to check them from time to time.
Thanks to all for a speedy delivery.

Model relative to the price is very pleasantly surprising. Car if beauty of performance. There is ultraviolet style lighting. The battery is not big, but it is relative. More of a toy than a model.