Buy EQS and open questions

Hello, currently I drive a BMW iX3 (since 130tkm). I am interested in an EQS. Unfortunately, none of the Mercedes dealers I know offers the possibility of an extensive test drive. I would like to test the range under real conditions. Does the 450+ really come from Munich to Berlin without reloading with 30km rest as tested by automobile – at moderate motorway speed? Furthermore, I would be interested if there is room for a medium-sized dog (Vizsla) in the trunk. Great if someone could help me. Greetings Sascha