Eruptions of the Yellowstone volcanic system have included the two largest volcanic eruptions in North America in the past few million years; the third largest was at Long Valley in California and produced the Bishop ash bed.
On the diesel Passat, the TDI badge stands for Turbocharged Direct Injection, which isn't really all that helpful as the gasoline-powered Passat is also turbocharged and also uses direct injection. Volkswagen attempts to clear this up by calling this Passat the Passat TDI Clean Diesel.
TEMPORARY DISABILITY INSURANCE. Temporary Disability Insurance (TDI) programs are designed to provide wage replacement for. non-work-connected sickness or injury. The TDI program complements the UI program by providing. benefits to individuals who do not meet the UI program's ableâ to work requirement.