WordPress Plugin for a Journey Planner using Google Maps API

We're looking to build our own version of a "Journey Planner" - You can see a working example of it in this link https://bit.ly/3hZQn25 - we want our version off it without copying their code. There will be simple styling changes to match our branding / colours. We're thinking this feature could be done in a custom WP plugin.

Our website is a property / estate agent site using WP RealPlaces theme. The start address will be pulled in from our webpage property listing's address, and user will enter their end address. On click "Calculate" (and without page refresh), it will show travel times via Public Transport, Cycling, Walking and Car - calculated by google maps api (same as if user did a lookup on google maps).