Street car a mis-use of city property?

One of the old streetcars already purchased by the Lancaster Streetcar Co. is on display on the vacant lot at Prince & Chestnut Sts. This lot is owned by the City of Lancaster, purchased as a part of the police station project.

I am concerned that this streetcar is being openly displayed on a Lancaster City owned piece of property. This makes it appear that the Lancaster City government is openly supporting the streetcar project. The truth is, this issue has come before Lancaster City Council only once (at a committee meeting in 2007), and only for informational purposes.

Does the Mayor of Lancaster have the right to allow a "private" corporation like the Lancaster Streetcar Co. to put on a public display on Lancaster City owned property?