Lets say I've got a table listing car brands or models:

Cars:

Id | Brand
-----------
1  | BMW
2  | Audi
3  | Volvo

And I've also got another table which links features.
Link:

Id | carid | featureid
-----------------------
1  | 1     | 1
2  | 1     | 2
3  | 2     | 2
4  | 3     | 1
5  | 3     | 2
6  | 3     | 3

And I've got the table listing the features.
Features:

Id | Feature
-----------
1  | A/C
2  | 4WD
3  | Heated seats

I want to list these results on my front page like this:

BMW

• A/C
• 4WD

Audi

• 4WD

Volvo

• A/C
• 4WD
• Heated seats

What's the best/most efficient way of doing this (using PHP and MySQL)?