<human>: Can you succinctly summarize the text in 1-3 sentences?

So I'm registered on this carpooling or car ride sharing platform where you can offer other people seats in your car if you go somewhere.

I usually put any longer ride online, since I was hitchhiking a lot when I was younger and I'd have been glad if there had been an opportunity like this. So I know what it is like to rely on an overpriced, unefficient railway network and that car ride sharing 

So today I will have a 5 hour trip, going back the next day. I rarely get any requests, but for those 2 rides I got 3 at a time. However, I simply don't feel like I want to have people around, I feel like I need some time alone, time to think.
The past weeks have been very stressful and busy, I was dealing with lots of people, I was travelling a lot and I had to make some major decisions. After such times I often become pretty introverted and I enjoy having to go on long trips like this, because they allow me to relax and think things through, apart from the fact that I totally love long car rides, because I can go at my own pace.

Still, I feel guilty for not offering those people a seat and I will most likely have to lie about the reason why, since people might won't understand if I say that I simply prefer to travel alone this time (despite putting my ride online).

A co-worker told me "*dude, it's your car, it's your free choice to go by yourself, if you feel like it, you're not responsible for other people.*". I know he's right, but it still feels pretty selfish to drive that far with a car that could easily fit 3 passengers. But currently I feel like I could barely handle 1 at a time.

In need of some advice and/or moral approval.
<bot>: I usually offer to share my car with other people but rarely have requests. This time I have requests but I feel like I want to be left alone but I feel bad for it