In this episode of Engineering Update, brought to you by SanDisk:

A lego car
The Super Awesome Micro Project is a car just like any other, only its made entirely of Legos. Stave Sammartino and Raul Oaida used 500,000 Lego pieces to construct the vehicle which features a car engine made from lego pieces that runs on air

A cholesterol test
SmartCARD, developed by researchers at Cornell, is a smart phone attachment that lets you measure your cholesterol using blood, sweat or saliva.

A high energy laser weapon
Recently, the army demonstrated a vehicle-mounted high-energy laser to engage more than 90 morter rounds and a few UAVs in flight

And a new sensor for weather
The new sensors, called WVSS-II were manufactured by spectra sensors and will measure water vapor hundreds of times during flight, replacing the twice a day method of weather balloons.