Petal Envelopes Someone Revise This Paragraph Please? (grammar And Such)?

Someone revise this paragraph please? (grammar and such)? - petal envelopes

Can anyone check grammar errors or misuse of the word or something like that. Thank you.
full paragraph: The interest in this subject. Why did you decide on this issue?

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The automotive world continues to grow and grow. As time passes, the complexity of the automobile continues to grow and to push the envelope. Do not forget the question that still adheres to your idea of an environmentalist, if one of the steps that Petal gas pollution. My project will focus on changing the engine of the car and how its been changed, to reduce pollution emitted by cars. Iv always had a passion for hands on work and not afraid to dirty my hands. When I was young, have always liked to fix things. The feeling of control when the tools in the hands and right for you. For me, the cars must be repaired, it is like an art afraid to wait for the last part, so that vehicles can roar again.