When procuring VIP vehicles, focus on chassis stability and interior craftsmanship. Key specs include high-density soundproofing materials (butyl rubber layers), aviation-grade luxury seating with electric 10-way adjustment, heating, ventilation, and massage functions. Ensure the electrical system uses a dedicated secondary battery circuit to power interior amenities like 4K smart partitions, refrigerators, and starlight headliners without draining the main engine battery. For executive use, verify the integration of high-speed Wi-Fi routers and HDMI/USB-C charging hubs.