According to kars4kids official youtube, channel, the Kars 4 Kids radio jingle you love is now available on TV!
Here is the number the Kars4kids commercial displays 1-877-Kars-4-Kids.

It says “Donate your car today”! #karsforkids. http://www.kars4kids.org/

Here is the tv/radio commercial from youtube. This is the radio commercial that made Kars 4 Kids famous and went viral. Enjoy! You can also watch the new remix version of this song at http://www.kars4kids.org/song

You can also join kars4kids at Google plus here https://plus.google.com/106170791693850660084/posts
The Radio/TV Ad highlights these numbers: 1 877 kars for kids. K-A-R- S kars for kids. 1 877 kars-for-kids.

Here is the another Kars4kids.org 1800 kars4kids jingle commercial officially published on Nov 4, 2014 on their youtube channel.

Here is the 1877 kars4kids theme song