Fiat is marking five years since they launched their modern 500 hatchback with a special edition model, creatively titled the 'Happy Birthday' edition. Set for a limited run of 555 units, the Birthday edition 500 and 500C will be offered only in Germany (Fiat says other special editions marking the occasion will be available around Europe). The Happy Birthday 500s will feature throwback wheel covers, two exclusive exterior finishes, a roof antenna and door mirrors finished in white.