Open Google Maps and tap your profile icon in the top right corner, then select Location sharing. Tap Share location, choose ...

but if you use this button the map won't immediately re-center itself while you're driving. The third icon looks like a speaker and allows you to mute or unmute Google's spoken driving instructions.

Use the mobile app to take advantage of this feature. How to use Google Maps Immersive View while driving Immersive View on Google Maps shows what your route looks like before you start your trip ...