My friend's father offers to go for a car ride with him, what should I do? ⇐ Incest

[Guest]

Hi all! I’m 17 years old, this is not the first time my friend’s father has invited me to go for a ride in his car, behind the wheel, and writes that I’ll be able to take my mind off my problems, etc.
Before my friend went to college and moved to another city, I often visited her (either just visiting or spending the night), her father said that I was already like a daughter to him. After my friend’s admission, we slowly began to communicate with her dad, from this conversation I learned that during my friend’s studies, he managed to meet a 22-year-old girl (my friend’s mother and I have been divorced for a long time), all this became somehow alarming. The question is, is it worth going with him or not?