| 摘要 |
<p>A method and apparatus for display, having a tailpipe attachment piece (24), adapted for coupling to the exhaust pipe (10) of a vehicle, a receiver piece (27, 28, 30) coupled to the tailpipe attachment piece (24), wherein the receiver piece (27, 28, 30) is adapted for coupling to a display piece (12). In one embodiment, a pollution detection device includes a tailpipe attachment piece (94), a receiver piece (98) coupled to the tailpipe attachment piece (94), and a chemical indicator (99) coupled to the receiver piece (98), wherein the chemical indicator (99) is sensitive to the chemistry of emissions. In one embodiment, a method of presenting an advertisement message is provided by attaching the message to the exhaust pipe (10).</p> |
