I've had moderate luck with podcasts; I use Google's podcast app, and want voice commands when driving. But it only works 50-70% of the time, and only with some

I've had moderate luck with podcasts; I use Google's podcast app, and want voice commands when driving. But it only works 50-70% of the time, and only with some of the podcasts. I'd much rather just have the ability to set trigger words that execute macros. Really, there are only a few of them that i need regularly.