How to: send email when the node of a new comment has specific term in field

Pulling my hair out over this :-)

How do I create a rule that:

1) Sends out an email, WHEN...
2) A new comment is posted...
3) On a node that has a specific term value in a field

Say, we have an existing node with the taxonomy field "Vehicle type" filled out with the value/term "Car". Now, a comment is posted on this specific node. What we want is to have an email sent out to a specific role type - could be named "Car owners".

How do we do this? Simple can't figure it out. No doubt we need to work with data comparison... but how?

Thanks in advance, guys!