In case don't wanna pay subscription to Proton got any alternative like using eSim from Digi/Maxis etc? I believe current X50 / X70 also have similar connected vehicle service, so maybe owners can chime in.

Well im not sure bout it but hopefully can use telco sim just like the one you mentioned

There is an option for data top up, data package but at higher price/data. Suggest use phone hotspot then.