Provided is a semiconductor package including a lower package, an interposer on the lower package, and an upper package on the interposer. The device is elastic and designed to securely fit many different shift levers. The number of fibers used to fabricate the structures is variable. Database schema patterns that define a database are automatically created based on respective programming language patterns that define objects of an object model. The grooves may contain a plurality of portions, including a radiused or angled portion, a portion having substantially parallel walls, a portion having a v-shape, and a curved portion. The fuel is selected from a plurality of different fuel types.