Many modern cars come with privacy glass, either standard or optional, but some owners prefer the flexiblity of tailored sun shades which can be fitted or removed as required. I can thoughly recommend Car Shades
https://www.uvcarshades.co.uk/ who have a good range - BUT if your car isn't listed, give them a call or email, I did just that and they were quite happy to leave a set FOC in my car after using it for the day to make their patterns.