THERE'S A WAY.
Take a top view of the surface requiring the details, define the linework you need, export the image to Photoshop, draw and color the effect and then make a material texture from the colored image.
Photoshop will stroke edges. Once you've established a color for grass and a color for roadway, the stroke function applies curb lines or sidewalk lines...
The corner of the texture image is aligned to the corner of the mesh with the 3D align tool.
This is detailed in an exercise in my book where an entire site plan, roadways and all surface features are stretched over a mesh. The attached is a rough OpenGL view - the rendering is much smoother since the mesh is commanded to be smooth.
ANOTHER way to make a parking lot is Mark Beauman's commercial PARKING object that organizes stalls and also places cars randomly.
Dwight Atkinson