I almost didn't get these cars, as other reviewers had complained that there is no 'on/off' switch.... however the company must have upgraded the toys since then, because there most certainly is a switch. Its perfect because as any parent with noisy toys can appreciate, the sound/music can get on your nerves. My 18 month old daughter loves them, they are very sturdy, and move very smoothly. The toys have sound, music, and spoken words ( 'its an ambulance.. lets take the patient to the nearest hospital.'... etc.) So my little girl has learnt to say fire engine, etc. Always nice to have talking toys, as they get something out of it, instead of just annoying tunes!
In conclusion, great buy at a great price. I will be looking into other ranges in this product for sure.