Breastfeeding while being out

Kim • From UK 🇬🇧 relationship since 2010 🎉🔑🌹👫 want a big family currently 👧👦🏼👶🤰👨‍👩‍👧‍👧
What do ya'll do when you're out like in the car in traffic or at a point where you can't stop and the baby starts howling for food. 
I've had to stop in some weird places and it can take me 45 mins to do a 5 minute journey,
Feel for the baby when we in traffic... Breaks my heart.. Any advice, 
She's only two weeks.