What am I riddles

I am a vehicle. I spell the same when you read me forwards as well as backwards. What Am I?

I always work under pressure and by myself is the only way I'm hurt. I was formed under pressure and for woman I'm pleasure. What am I?

I have 4 eyes, but I cannot see! What Am I?

I'm in your phone. Sometimes I laugh. Sometimes I cry. I even flip you off from time to time. What am I ?

You can easily touch me, but not see me. You can throw me out, but not away. What am I?

It can't be seen, can't be felt, can't be heard and can't be smelt. It lies behind stars and under hills, and empty holes it fills. It comes first and follows after, ends life and kills laughter. What is it?

I am pronounced as a one letter alphabet. I am written with three letters. I am complete with just two letters. I am double. I am blue I am black I am brown I am gray I am yellow and I am green. I can read from both ends. I appear the same every way! What am I?

Its ready to walk when I'm all tied up, but really should stop when I'm untied. What am I?

I like to twirl my body but keep my head up high. After I go in, everything becomes tight. What am I?

I am always will be coming, but I will never come. What Am I?