“Share ETA” is one of the best features to come from iOS 13—if you and your friends are Apple Maps users, that is. And once you’ve updated to iOS 14.5, the latest version of Apple’s mobile operating system, you’ll be able to send ETAs to friends when you’re cycling or walking, too. Take that, cars.
source https://lifehacker.com/how-to-share-your-eta-in-ios-14-5-if-youre-driving-bik-1846788341