Give your product away --- very carefully and with much fanfare

Send a sample model trolley to the White House as a gift for the children of celebrities or other prominent people this coming Christmas. Follow this up with a professional press release explaining this gift to --- NO, not Model Railroader or Railroad Model Craftsman or even one of the fine trolley specialty magazines --- but to a carefully chosen selection of newspapers of general circulation (the N.Y. Times, the Los Angeles Times, the Philadelphia Inquirer, the Boston Globe, and the equivalent papers in Chicago, St. Louis, and so on) and other national magazines, as well as newscasters at TV networks and cable TV shows. Press releases are essentially free. If they are written in proper style (obtain advice from one of the many books on the subject in your free public library on how to achieve that professional look) they will probably draw attention and just might get printed.