My parents gave the G-Wagon that Grandpa gifted me to my sister. My grandpa asked, confused...

My parents gave the G-Wagon that Grandpa gifted me to my sister. My grandpa asked, confused, "Why are you arriving in an Uber? What happened to the G-Wagon we bought you for your 24th birthday?" Before I could open my mouth, my dad smiled and said, "Her sister needed it more." Everyone froze. Grandpa opened his binder and did something none of us expected.