Questions about the MTV movie the truth below ?

1. What were the secrets they told each other ? 2. Was the ending supposed to be a flashback or the future ? 3. How did they get stuck in the first place. 4. What happened in the car like not the secret stuff but like physically ? 5. Whyb did they go on this trip anyways ? 6. Did they all die ? sorry only got to watch the first thirty mins of the second hour