brass is recyclable they can go with the other copper/lead/alloy that RPM (my flatmate) recycles through his building company.
i haven't seen a small handpump that will put 110psi into a tyre easily and fit into my jersey pocket
and as for the co2 for the last 15 years i haven't and do not drink fizzy drinks which use c02 for the bubbles, i wonder how many 1 liter bottles of lemonade = 16g of co2?
good show, planet saved! i'll vote for the TPF!