Allen,
Echo works with IFTTT, using the word "trigger" followed by any phrase to trigger a recipe. So, you could say "Alexa, trigger Tesla heat" or "Alexa, trigger garage door" to specifically launch a dedicated web link. All you'd need to provide would be a link that triggers an event, allowing the user to append their custom car information. The Maker Channel (
Connect Maker to hundreds of apps - IFTTT), for example, can make or receive webhooks.
The the beauty of an IFTTT solution is that it's not limited to Echo as the interface but any sensor or input, from time schedules, to locations, to weather conditions.
(Hope your recovery continues to be going well.)