Logo / Shirt Design

I work for Lois Kay Contracting, we are in the Road Construction business specializing in "Milling" or Cold Planing. We are looking to update for the first time in a long time. Our logo will remain the same (or something very similar maybe just updated a bit) but we would like to do a shirt with our logo on the front chest and create a new design including our name/logo large on the back. I would like to incorporate one or two of our machines that we use daily (I will include photos, also you can look at our website or facebook page). We used to have a shirt with a asphalt roller on it but that really doesn't suit our business these days. I really would like to keep it somewhat simple, so maybe similar to the old shirt where it was just a 1 color line drawing that way its more cost effective for printing purposes. I am really open to just about anything as far as the design goes like I said I would like to incorporate our mills, maybe one of the big machinesgoing one direction and one of the small ones facing the other direction. Our large machines are Roadtec 900E machines and our smaller mini mills are Wirtgen 60i machines.(I will include pictures of both and 1 picture that will show somewhat of the difference in scale of the machines). I didn't have a lot of pictures of our small machines do not have the umbrella canopy or the rear conveyor(as pictured). Please feel free to reach out with any questions, Thanks.