If you like smooth jazz try The Sax Pack. I'm going to be seeing them at the Berk's Jazz fest in April. Can't wait! I too have a great system in my car and I crank up the volume and cruise!
I'm very open minded about music - I love music but my favourite music to listen to is Classic rock - Seeing and listening to this live is also an amazing experience!
Hope you find something inspirational. Would be easier if you wrote what you liked ;)
This is currently what is filling up my playlist:
Midnight Juggernauts - Nice electro with a good beat. "Tombstone" is their best song.
Aliz?e - Happy french lolita pop. "J'en ai marre" is her best song.
Mylene Farmer - Aliz?es mentor. Great french music. "Sans Contrefacon" is her best song.
Melotron - German EBM that catches on.
The Embassy - Fantastic Swedish band. Download "It pays to belong" with them.
And a bunch of different Mashup song. My favourite is a version with "Theese boots are made for walking" with Nancy Sinatra mashed with "Another brick in the wall" with Pink Floyd.
Lately, driving to and from work, it's been Classical. My new car stereo is so awesome, I can feel as though I'm in a concert hall. The music sings to my heart and soul. It can be either soothing or inspiring.