Check Out This DeWALT Cordless, Brushless Circular Saw! - YouTube
You can make the reg circ saw into a track saw by switching base plates. This is a standard setup in England I've seen https://www.partshopdirect.co.uk/dewalt-dcs575-dcs576-shoe-base-with-guide-rail-slots-pN472354/ : r/Dewalt
Dewalt DCS576N 54v XR Flexvolt Circular Saw 190mm Track Rail Bare + TStak Inlay | DIY at B&Q