Fast Car Rhythm Guitar

The finger style pattern of Tracy Chapmans 'Fast Car' should be as consistent as possible.
In order to achieve the "loop effect" that the verse need you shouldn't vary this type of pattern at all.

Instead focus on playing it with feel, but without varying it.
To understand this type of playing, compare to drummers who play a steady beat with no fills.

Possibly the best example of this type of playing is the drum beat of 'Billie Jean' by Michael Jackson.
By playing in this way all focus move to the vocal. 

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When practicing this type of playing it's all about stamina, set a click to the same tempo as the song, time yourself to see how long you can keep going.
To get even better at this type of stuff, slow down the BPM.

Chorus Strumming

The chorus strumming might be difficult to get along with at first.

A combination of index finger strumming, thumb picking bass notes and using several fingers to strum you can achieve many dynamic effects.

Don't pay attention to what I do exactly in the video, instead use a strumming that feels natural to your hand.
I can guarantee that I would strum this differently every time I play it.

The use of a pick might be very tempting, but how do you go from finger picking to strumming with a pick?