I was very impressed by the fact that they gave 5 separate motors and battery units , which allow you to build and use all 5 vehicles independently. Usually kits like these have you reuse the electric parts, but this is great -- no disassembling and taking out vital parts of the old vehicle required! you can run all 5 at once!great for kids 8 and up. Instructions are easy enough to follow but I took one star out because of come confusion caused by different colored parts than stated in the manual (but my genius boy, smarter than me, figured it all out while I was left scratching my head.)
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