The $725,000 for the vehicle itself is not optional, however, and so far only Caterpillar and a local foundation have written checks.But many others are donating valuable equipment and expertise.

• 然而，车辆本身的72万5000美元却不能省，而且到目前为止，只有开拓重工和一家当地的基金会签下支票，但是有许多其他夥伴捐献出贵重的设备和专门技术。