Mobile Toilet for High-Speed Traffic Jams
The patent for 'Vehicle-mounted Toilet and Vehicle' applied for by Seres Automotive Co., Ltd. provides a vehicle-mounted toilet solution that can be hidden under the seat, aiming to address the toilet problem in scenarios such as high-speed traffic jams.

Device Structure and Function
The device consists of a toilet body and a slide rail assembly. It is normally hidden under the seat, not affecting the interior space and aesthetics of the vehicle. When in use, it can be pulled out via the slide rail to form a complete toilet structure, and is equipped with disposable toilet bags. After use, it can be pushed back into place, leaving no visible traces on the outside. In addition, the patent mentions the provision of a 5L sealed waste collection tank that can effectively collect waste and prevent leakage; a negative-pressure deodorization system that can quickly remove odors and keep the interior air fresh; a constant-temperature heating function that provides a comfortable toilet temperature; and a foldable privacy curtain that protects the privacy of the user.
Design Intent
In view of the long endurance of new energy vehicles and their suitability for long-distance self-driving trips, this device aims to solve the toilet problem for users during long-distance travel or high-speed traffic jams. During holidays when there are high-speed traffic jams or in remote areas without service stations, this device can provide great convenience for passengers.
Patent Application and Discussion
The patent was applied for in April 2025 and approved on April 10, 2026. At present, the official has not yet clarified whether it will be applied to mass-produced vehicles, but it has already sparked widespread discussion. Supporters believe that it is a boon for families with children and long-distance travelers, especially in special scenarios where it is highly practical; opponents, however, are concerned about issues such as odor treatment, cleaning and maintenance, and social embarrassment, questioning whether it is a 'pseudo-need'. For example, if odor treatment is not thorough, it may affect the interior air quality; in terms of cleaning and maintenance, the replacement of disposable toilet bags and the cleaning of the waste collection tank require certain operations; social embarrassment is reflected in the fact that the use process may make other passengers feel uncomfortable.




