* Google Images: Search for "Lincoln Town Car top view" or "Lincoln Town Car overhead view." You might find a suitable photo or even a poorly-drawn diagram. Be prepared to sift through many results.
* Automotive Parts Websites: Some parts websites might have exploded diagrams showing the vehicle's exterior components, potentially offering a glimpse of a top-down perspective, though likely not a clean, single-view diagram.
* Technical Manuals (if you can find one): A comprehensive workshop manual for the specific year of Lincoln Town Car you're interested in might contain a top view, but these are rarely available online for free.
* Create your own: If you're comfortable with digital drawing software, use a reference image (a photo of a Town Car from a slightly elevated angle) to create your own top-down diagram.
Keep in mind that a perfectly accurate and detailed top-down *diagram* is less common than a photograph. A photo from a high enough angle will likely serve the purpose better.