You can add modern car functionality to most cars, even a 16 year old Lexus. Yes, my 2003 Lexus GX 470 now has a 10 inch touch screen with Internet web browsing, wireless Apple CarPlay (or Android Auto), Bluetooth calling and audio streaming, TPMS tire monitoring and much more.
Use an appraiser's sketch to draw a 3D space plan for your home. The background image can be any source - hand drawn on graph paper, a marketing brochure you got when you bought your home, architectural plans, whatever. Just snap a photo (or scan) from about 90 degrees, upload that image as a background image and then scale one wall. Then start drawing. See the video for detail on how to get started.