<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<S> <C> <C>
<PERIOD-TYPE> YEAR 6-MOS
<FISCAL-YEAR-END> DEC-31-1999 DEC-31-2000
<PERIOD-START> JAN-01-1999 JAN-01-2000
<PERIOD-END> DEC-31-1999 JUN-30-2000
<CASH> 21,507,673 24,663,206
<SECURITIES> 0 0
<RECEIVABLES> 0 0
<ALLOWANCES> 0 0
<INVENTORY> 0 3,094,484
<CURRENT-ASSETS> 21,833,955 28,028,331
<PP&E> 2,812,820 3,955,849
<DEPRECIATION> (776,490) (1,635,846)
<TOTAL-ASSETS> 24,370,285 28,028,331
<CURRENT-LIABILITIES> 5,325,173 4,339,847
<BONDS> 0 0
0 0
40,891,126 58,309,311
<COMMON> 144 194
<OTHER-SE> (22,789,443) (32,556,464)
<TOTAL-LIABILITY-AND-EQUITY> 24,370,285 30,848,334
<SALES> 0 1,826,739
<TOTAL-REVENUES> 0 1,826,739
<CGS> 0 1,302,936
<TOTAL-COSTS> 0 1,302,936
<OTHER-EXPENSES> 21,409,134 12,195,557
<LOSS-PROVISION> 0 0
<INTEREST-EXPENSE> 67,139 66,115
<INCOME-PRETAX> (22,338,539) (12,918,533)
<INCOME-TAX> 0 0
<INCOME-CONTINUING> (22,338,539) (12,918,533)
<DISCONTINUED> 0 0
<EXTRAORDINARY> 0 0
<CHANGES> 0 0
<NET-INCOME> (22,338,539) (12,918,533)
<EPS-BASIC> (1.11) (0.38)
<EPS-DILUTED> (1.11) (0.38)
</TABLE>