This was on his 4th or 5th birthday, and yes, I did this while he was sleeping so when he woke up, he was like OMG! Let me show you what I mean ......

It was all the good ones too - j/k .....

Yes, he was most definitely happy ....

He wanted to show me EVERY SINGLE ONE ....

It was certainly a fantastic moment for him, and us - and we still have hot wheels EVERYWHERE - lol
Enjoy!