Can I stream music from my iPhone 5 to my 2008 Lexus LS600h?

Can I stream music from my iPhone 5 to my 2008 Lexus LS600h?

I think you can

If you spent the time reading the instructions on this Equipment i'm sure you'd have your answer. You can Google the type i phone or just use Youtube in the car audio section has every car audio install known to man, try the same question on Youtube.

There's a product on the market that may allow you to do that.
It is an ipod integration kit sold by GTA CAR KITS.

The kit connects directly to the back of your radio, allowing you to connect an Apple device and play music from it with cd quality. You would even be able to control the music from your car radio, and as well as your device.
The kit offers a 30 pin Apple connection and a 3.5mm aux connection. To connect an iphone 5, you would need an official Apple 30 pin to lightning adapter. Just be sure it is an Apple adapter, third party ones will NOT work.

Installation is pretty simple, they even provide instructional videos showing how the kit is installed and used. It takes most people under an hour to install.
I have had mine for about a year now and love it. I can't live without it, and barely listen to radio anymore.

You can get more information about the kit, and find the one you need on their website. It is

Wirelessly via Bluetooth, no.

Through the use of an Aux jack or after market product, sure.