extra will allow for "snap in" upgrades such as a more powerful engine, vehicle audio, ventilated seats, or seasonal tires; these do not require any change to other units of the car such as the chassis, steering, electric motor or battery systems. In machines and architecture Modular design can be seen in certain buildings. Modular buildings (and also modular homes) generally consist of universal parts (or modules) that are manufactured in a factory and then shipped to a build site where they are assembled into a variety of arrangements. Modular buildings can be added to or reduced in size by adding or removing certain components. This can be done without altering larger portions of the building. Modular buildings can also undergo changes in functionality using the same process of adding or removing components. For example, an office building can be built using modular parts such as walls, frames, doors, ceilings, and windows. The interior can then be partitioned (or divided) with more walls and furnished with desks, computers, and whatever else is needed for a functioning workspace. If the office needs to be expanded or redivided to accommodate employees, modular components such as wall panels can be added or relocated to make the necessary changes without altering the whole building. Later, this same office can be broken down and rearranged to form a retail space, conference hall or another type of building, using the same modular components that originally formed the office building. The new building can then be refurnished with whatever items are needed to carry out its desired functions. Other types of modular buildings that are offered from a company like Allied Modular include a guardhouse, machine enclosure, press box, conference room, two-story building, clean room and many more applications. Many misconceptions are held regarding modular buildings. In reality modular construction is a viable method of construction for quick turnaround and fast growing companies. Industries that would benefit from this include healthcare, commercial, retail, military, and multi-family/student housing. In Trade Show Exhibit and Retail Display Design The concept of Modular design has become popular with trade show exhibits and retail promotion displays too. These kind of promotional displays involve creative custom designs but need a temporary structure that can be reusable. Thus many companies are adapting to the Modular way of exhibit design. In this they can use pre engineered modular systems that act as building blocks to